<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>用户登陆</title>
</head>
<style>
    *{
        margin:0px;
        padding:0px;
    }
    .container{
        margin:20px auto;
        width: 300px;
    }
</style>
<body>
    <div class="container">
       <form action="./doLogin.php" method="post" >
            <table>
                    <thead>
                        <tr>
                            <th colspan="3" style="font-size:20px">用户登陆</th>
                        </tr>
                    </thead>
                    <tbody >
                        <tr>
                            <td align="right">用户名:</td>
                            <td colspan="2">
                                <input type="text" size=25 name="username">
                            </td>

                        </tr>
                        <tr>
                            <td align="right">密码:</td>
                            <td colspan="2">
                            <input type="password" size=25 name="password">
                            </td>

                        </tr>
                        <tr>
                            <td align="right">验证码:</td>
                            <td>
                            <input type="text" size=15 name="usecode">
                            </td>
                            <td>
                            <img src="./pngImg.php" alt="" width="70px" height="30px" alt="验证码加载失败" title="点击重新加载验证码">
                            </td>
                        </tr>
                        <tr align="center" style="height:40px">
                            <td colspan="3">
                                <button>登陆</button>
                                <button>退出</button>
                            </td>
                        </tr>
                    </tbody>
                </table>
       </form>
    </div>
</body>
</html>